My charitable budget mostly goes to $50k or so of annual healthcare spending, between premiums, copays, and whatnot. I've yet to find a charity willing to cover it, which is part of why I'm pretty skeptical about scaling that approach up even further.
If you're giving 11% to genuinely charitable causes, good for you! But you're very, very much an outlier.
I don’t see maintaining a church and staff as the same as maintaining a charitable clinic and its staff. As such, I don’t count a tithed dollar as necessarily equivalent as a dollar given to a high quality secular charity.